The S&P 500 index SPX, +0.01% will have some new members in 2020, after S&P Dow Jones Indices announced a shuffle set to take place just before Christmas. Live Nation Entertainment Inc. LYV, -7.33%, Zebra Technologies Corp. ZBRA, -0.19% and Steris PLC STE, -1.13% will join the benchmark index ahead of trading on Dec. 23, S&P Dow Jones Indices said in an announcement Friday afternoon. They will graduate from the S&P MidCap 400 and replace three companies that will drop down to that index: TripAdvisor Inc. TRIP, -0.68%, Affiliated Managers Group Inc. AMG, -2.10% and The Macerich Co. MAC, -1.70% “All companies moving to the S&P 500 have market capitalizations above $12 billion, and all companies moving to the S&P MidCap 400 have market capitalizations below $4.5 billion,” the announcement notes. Live Nation’s stock showed the largest reaction to the news, jumping 1.8% in after-hours trading, after falling 7.3% in regular trading after a report that the Justice Department is preparing legal action against the Ticketmaster parent company.